Load Specifications
Bullet Manufacturer:Barnes
Bullet Weight:165 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.003"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:74 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:11.5
Load data in caliber .300 Rem. SA Ultra Mag. with .308 | 165gr | Barnes TTSX BT bullet and 107 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and ReloadSwiss RS 52.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 57,246 psi | 88% | 2769 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,564 psi | 85% | 2795 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 58,595 psi | 90% | 2831 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 57,798 psi | 89% | 2861 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,288 psi | 85% | 2782 fps | 96.3% |
| Accurate 4064 | <<locked>> | 96% | 58,189 psi | 90% | 2874 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,589 psi | 78% | 2848 fps | 98.9% |
| Accurate LT-30 | <<locked>> | 82% | 56,507 psi | 87% | 2717 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,956 psi | 88% | 2743 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,463 psi | 87% | 2871 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 96% | 57,406 psi | 88% | 2867 fps | 99.7% |
| ADI AR 2219 | <<locked>> | 82% | 57,827 psi | 89% | 2838 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,550 psi | 85% | 2825 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,782 psi | 86% | 2799 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 57,435 psi | 88% | 2933 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,115 psi | 86% | 2989 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,826 psi | 87% | 2884 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,768 psi | 87% | 2772 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 57,841 psi | 89% | 2910 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,545 psi | 76% | 2854 fps | 99% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 58,073 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,969 psi | 54% | 2579 fps | 96.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,579 psi | 86% | 2710 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 56,275 psi | 87% | 2887 fps | 99.5% |
| Bofors RP3 | <<locked>> | 96% | 57,421 psi | 88% | 2900 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 58,073 psi | 89% | 2867 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 57,450 psi | 88% | 2805 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 58,566 psi | 90% | 2907 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,637 psi | 87% | 2949 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 84% | 56,202 psi | 86% | 2818 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 57,421 psi | 88% | 2848 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 55,303 psi | 85% | 2864 fps | 99% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 54,418 psi | 84% | 2907 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 98% | 55,477 psi | 85% | 2871 fps | 96% |
| Hodgdon H4895 | <<locked>> | 90% | 57,058 psi | 88% | 2884 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,832 psi | 71% | 2740 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,130 psi | 86% | 2913 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,564 psi | 85% | 2943 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 54% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 58,291 psi | 90% | 2884 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 56,550 psi | 87% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,956 psi | 88% | 2851 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,217 psi | 88% | 2828 fps | 97.5% |
| IMR 4198 | <<locked>> | 84% | 57,319 psi | 88% | 2736 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,024 psi | 78% | 2785 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,579 psi | 87% | 2851 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,341 psi | 74% | 2792 fps | 98.6% |
| IMR 4895 | <<locked>> | 92% | 55,535 psi | 85% | 2890 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 88% | 55,550 psi | 85% | 2825 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,463 psi | 85% | 2805 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,564 psi | 85% | 2841 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,130 psi | 86% | 2799 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 56,289 psi | 87% | 2844 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,376 psi | 85% | 2838 fps | 98.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,649 psi | 81% | 2818 fps | 97% |
| Norma 201 | <<locked>> | 92% | 58,523 psi | 90% | 2864 fps | 100% |
| Norma 202 | <<locked>> | 90% | 55,463 psi | 85% | 2818 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,913 psi | 88% | 2897 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 50,314 psi | 77% | 2841 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 94% | 57,624 psi | 89% | 2923 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,342 psi | 76% | 2831 fps | 97.1% |
| Ramshot TAC | <<locked>> | 88% | 56,072 psi | 86% | 2841 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 55,434 psi | 85% | 2861 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,739 psi | 87% | 2828 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,244 psi | 54% | 1752 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 58,755 psi | 90% | 2854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,869 psi | 86% | 2848 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 58,508 psi | 90% | 2982 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 57,972 psi | 89% | 3015 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,430 psi | 78% | 2871 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,024 psi | 78% | 2897 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 88% | 55,506 psi | 85% | 2792 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 58,755 psi | 90% | 2858 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 57,261 psi | 88% | 2890 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 58,073 psi | 89% | 2867 fps | 97.1% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,376 psi | 85% | 2838 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,564 psi | 85% | 2841 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 56,289 psi | 87% | 2844 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,649 psi | 81% | 2818 fps | 97% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,752 psi | 84% | 2776 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 58,059 psi | 89% | 2851 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,506 psi | 85% | 2904 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 57,972 psi | 89% | 2799 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 58,146 psi | 89% | 2874 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 58,595 psi | 90% | 2897 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,884 psi | 88% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,855 psi | 87% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 56,275 psi | 87% | 2795 fps | 97.3% |
| Somchem S321 | <<locked>> | 86% | 56,753 psi | 87% | 2858 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,912 psi | 86% | 2753 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 57,450 psi | 88% | 2861 fps | 99.9% |
| Somchem S355 | <<locked>> | 98% | 57,754 psi | 89% | 2890 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,744 psi | 69% | 2789 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 86% | 56,623 psi | 87% | 2723 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,985 psi | 88% | 2743 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 58,291 psi | 90% | 2822 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,927 psi | 86% | 2795 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,840 psi | 86% | 2822 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,910 psi | 81% | 2838 fps | 99% |
| Vihtavuori N530 | <<locked>> | 88% | 55,970 psi | 86% | 2822 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 57,928 psi | 89% | 2841 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,953 psi | 80% | 2844 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,391 psi | 58% | 2654 fps | 96.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,085 psi | 83% | 2828 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 55,840 psi | 86% | 2871 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,418 psi | 84% | 2907 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 92% | 58,349 psi | 90% | 2900 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 44,309 psi | 68% | 2585 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,573 psi | 75% | 2694 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,695 psi | 56% | 2500 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,714 psi | 67% | 2651 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 51,779 psi | 80% | 2730 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 34,693 psi | 53% | 2487 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 35,592 psi | 55% | 2566 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 52,881 psi | 81% | 2667 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,301 psi | 82% | 2690 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,002 psi | 63% | 2608 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 34,795 psi | 54% | 2454 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 54,012 psi | 83% | 2789 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,134 psi | 66% | 2621 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 80% | 42,540 psi | 65% | 2612 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,314 psi | 77% | 2822 fps | 99.8% |
| Alliant Power Pro 2000-MR | 49.4 gr | 80% | 37,028 psi | 57% | 2618 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,997 psi | 52% | 2470 fps | 97.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,154 psi | 77% | 2680 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,767 psi | 57% | 2536 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,332 psi | 56% | 2582 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 82% | 31,285 psi | 48% | 2480 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,895 psi | 51% | 2526 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,228 psi | 80% | 2667 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,045 psi | 62% | 2605 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 33,373 psi | 51% | 2470 fps | 97.1% |
| Bofors RP7 | <<locked>> | 94% | 48,037 psi | 74% | 2710 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,063 psi | 69% | 2615 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,437 psi | 64% | 2635 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,629 psi | 70% | 2772 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 49,255 psi | 76% | 2720 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,038 psi | 77% | 2743 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 36,912 psi | 57% | 2530 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 96% | 47,485 psi | 73% | 2792 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 96% | 51,895 psi | 80% | 2812 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 41,321 psi | 64% | 2618 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,995 psi | 48% | 2421 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,086 psi | 57% | 2582 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 96% | 48,182 psi | 74% | 2818 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,846 psi | 40% | 1529 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,697 psi | 61% | 2572 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 40,596 psi | 62% | 2618 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,492 psi | 56% | 2490 fps | 96.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,369 psi | 73% | 2671 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 50,879 psi | 78% | 2648 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 48,037 psi | 74% | 2733 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 47,079 psi | 72% | 2694 fps | 95.3% |
| IMR 4831 | <<locked>> | 90% | 34,476 psi | 53% | 2520 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 37,637 psi | 58% | 2566 fps | 97.4% |
| IMR 8208 XBR | <<locked>> | 80% | 43,134 psi | 66% | 2621 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 48,225 psi | 74% | 2700 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,566 psi | 61% | 2585 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 41,408 psi | 64% | 2549 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 36,158 psi | 56% | 2493 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 40,509 psi | 62% | 2582 fps | 95.2% |
| Lovex S070 | <<locked>> | 96% | 46,325 psi | 71% | 2710 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 40,030 psi | 62% | 2562 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 40,234 psi | 62% | 2572 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 36,143 psi | 56% | 2526 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 36,201 psi | 56% | 2569 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 35,578 psi | 55% | 2533 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 96% | 43,236 psi | 67% | 2717 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 42,960 psi | 66% | 2618 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,134 psi | 65% | 2638 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,601 psi | 72% | 2667 fps | 98.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,063 psi | 40% | 1565 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,443 psi | 75% | 2707 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 42,728 psi | 66% | 2625 fps | 95% |
| ReloadSwiss RS 52 | 47.9 gr | 80% | 38,232 psi | 59% | 2635 fps | 96.9% |
| ReloadSwiss RS 60 | 48.6 gr | 80% | 31,212 psi | 48% | 2490 fps | 97.9% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,189 psi | 59% | 2641 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,481 psi | 64% | 2713 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 43,540 psi | 67% | 2605 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,956 psi | 58% | 2510 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 31,357 psi | 48% | 2415 fps | 96% |
| Rottweil R 907 | <<locked>> | 94% | 48,037 psi | 74% | 2710 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,509 psi | 62% | 2582 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,566 psi | 61% | 2585 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 36,158 psi | 56% | 2493 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 96% | 46,325 psi | 71% | 2710 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,184 psi | 79% | 2723 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 54,085 psi | 83% | 2795 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,576 psi | 50% | 2464 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,111 psi | 79% | 2703 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,799 psi | 63% | 2585 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,523 psi | 61% | 2575 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,539 psi | 64% | 2523 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,243 psi | 53% | 2388 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 45,905 psi | 71% | 2635 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 46,383 psi | 71% | 2697 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 41,220 psi | 63% | 2526 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,785 psi | 63% | 2589 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 32,460 psi | 50% | 2428 fps | 96.2% |
| Somchem S365 | <<locked>> | 86% | 28,282 psi | 44% | 2402 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 47,094 psi | 72% | 2589 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,829 psi | 64% | 2520 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,144 psi | 57% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,174 psi | 59% | 2513 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 30,806 psi | 47% | 2369 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 88% | 35,592 psi | 55% | 2520 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 43,091 psi | 66% | 2618 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,651 psi | 56% | 2497 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 37,289 psi | 57% | 2575 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 96% | 32,721 psi | 50% | 2539 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,444 psi | 48% | 2392 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 42,279 psi | 65% | 2657 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 44,614 psi | 69% | 2740 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,812 psi | 60% | 2575 fps | 98.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 107 powders for .300 Rem. SA Ultra Mag. loaded with the .308 | 165gr | Barnes TTSX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,713 fps to 3,015 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for .300 Rem. SA Ultra Mag. with the .308 | 165gr | Barnes TTSX BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.